I victoriously united 3 shards now but the winning screen is, well, disillusioning.
I felt pretty badass trampling the enemy defenses and butchering villainous criminals while enslaving Elven beauties.
But the victory screen tells me something like this:

You will not be remembered on this world, you're hero is nothing but a unwritten page on a forgotten history book.

What do I have do to, to be remembered as truly awesome cosmic entity that I really am.

Your fame is strongly affected by difficulty level, and every reversion back in time (i.e. reload) reduces it dramatically.

Just a high score. There is a table of high scores called "the book of the masters" in main menu.

Ahh, thank you, so that's the "glory" you lose when you "undo" your turn and switch to time travel